&nbsp&nbspEXCLUSIVE AT NET-A-PORTER.COM. Sies Marjan uses plenty of crinkled-vinyl throughout its latest collection - founder Sander Lak says the team wet and crumpled the fabric, then hung it to dry to produce its light-catching finish. Virtually weightless to wear, this 'Annabelle' biker jacket has a cropped silhouette. The rich navy hue pairs perfectly with blue jeans.